Gas-lamp.



A. LAZAR SON.

GAS LAMP.

APPLICATION FILED MAY27| 1914.

Patented June 27, 1916.

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A. LAZARSON.

GAS LAMP.

APPLICATION FILED MAY27, 1914.

1 1 88,66 1 Patented June 27, 191 6.

2 SHEETS-SHEET I.

WITNESSES. m.

ATTYi sr F r'rnnr onrion ABRAHAM LAZABSON, OF CHICAGO, ILLINOIS, ASSIGNOR '10 SAMUEL STEIN, OF

, CHICAGO, ILLINOIS. I j I GAS-LAMP.

PatentedJune 27, 1916.

Application filed May 27, 1914. Serial No. 841,197.

To all whom it may concern:

Be it known that I, ABRAHAM LAZARSON, a subject of the Czar of Russia, residing at the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Gras- Lamps, of which the following is a specification.

My invention relates to the mechanisms or devices used for burning illuminating gas mixed with atmospheric air, thereby producing a high degree of heat by which mantles of refractory material are heated to incandescence. It is especially applicable to that class thereof which are commonly called arc lights and in which one or more inverted mantles are placed at thelower part of the apparatus. This class of lights is generally hung high in store buildings and the like, and during the time they are out of service a pilot light is usually kept burning adjacent to the principal or main burners ready to ignite the gas when turned into them. The'performance of these functions is usually controlled by a main valve op- I erated by achain attached thereto and depending into convenient reach.

It is the object of my invention, among other things, to provide a simple and efficient mechanism for regulating the main gas valve. I also provide an improved means by which the mixed volume of gas and air is regulated at a point adjacent to the burner and by which also regulation of the flame and protection against flashbacks can be positively avoided without the use of screens. There are also convenient and effective devices for regulating the flow of gas and air to the mixing tube, for protecting the main valve from the heat of the burner, and for arresting the foreign matters which are brought into the lamp with the gas before they reach the burners.

My invention also includes improved forms and arrangements of the parts by which the whole device is made more simple and repairs and attachments are more readily and conveniently effected, the novel features of which are more fully set out in the detailed description and claims.

The principles of my invention are illustrated in the drawings, in which.

Figure 1 is a vertical section of the entire apparatus;

main valve stem taken on the line 22 of Fig. 2 is a section of the Fig. 3; Fig. 3 is a top view of the apparatus; Fig. 4 is an enlarged detail of the central union with its connections and adustments; Fig. 5 is a section of Fig. 4 on the line 5-5; Fig. 6 is a side elevation of the chimney shown in Fig. 1, looked at from the left; and Fig. 7 shows the outer end of the mixing tube.

Further describing my invention with reference to the drawings, in which like characters of reference denote like parts throughout: 1' is the main valve casing of my device having the longitudinal bore 2. A valve plug 3 .is transversely mounted therein having the cross-bore 4 therethrough. V l

5 is a dependent pipe connected with the main source of gas supply, to which the valve casing is attached. A four-toothed ratchet 6 is mounted or integrally formed on the valve stem and a lever 7 is also loosely mounted on the said valve plug. A spring 8 is coiled onthe valve plug outside the lever, and is held in the screw 9 which takes into the end of the main valve stem. One end of the said spring is attached to an arm 10 extended outwardly from the valve casing, and the other end of said spring engages at11 on the underside of the lever 7 to hold it in the illustrated position. A gravity actuated dog 12 is pivoted at 13 upon the said lever and the hook thereof is adaptedto engage with theteeth upon the ratchet 6. A plurality of upward projections 14 and 15 on the lever 7 are adapted to engage with the arm 10, thereby limiting the movement of the lever in each direction, while an upward projection 16 having the transversely extended portion 17 limits the upward movement of the dog 12. A nipple 18, having the adjusting screw 19, is threaded into the upperpart'ofthe casing so as to receive a flow of gas from the main source of gassupplythrough thenipple and into the pilot light connection 20. The main valve is shown inthe illustration as open, the cross-bore in the plug being in alinement with the longitudinal bore in the casing. When the long arm of lever 7 is depressed from the. the transverse opening. in the plug should be at right angles to the casing, this being provided for by the relation of projections 14 and 15 to the arm 10. As the lever is place by position illustrated 'is cut in the underside the released it moves to the position shown under the pull of spring 8, the dog 12 engages the next notch on the ratchet and a succeeding down pull turns the plug through another quarter revolution, thereby again opening the valve and allowing the gas to flow downward, being further controlled in its passage by the devices hereafter to be explained.

A link 21 connects the nipple 22 with the valve casing 1 above described, On the lower end of the nipple 22"is a union 23, having the vertical body portion 24 from the upper portion of which leads the outlet ofi-set'21) and into which at the lower portion leads the inlet oft-set 26. The vertical portion is provided with a transverse partition 27, above which is formed a receiving pocket or trap 28. The outlet oil-set has an extension 29,- having the longitudinal bore 30 for a portion of its length and a transverse outlet connected therewith. The outerend of said extension is threaded at 32 and a nut 38 is fitted thereon. The bore of the inlet oil-set 26 is enlarged adjacent to its outer end to form an inside annular shoulder S4. The inner end of the mixing tube 35 is seated in said enlarged portion, while the outer end at 36 is ing or funnel shaped. The said flaring por aonmay be torn-iodintegrally with the body of the n tube or separately constructed and attached thereto dlesiredt Across the outer end thereof is a support 87, having a central opening 38 and a notch 39 in its upper edge. A reversely curved connecting member having a body portion 4O is provided with thimhle 41 at its upper extremity, which is adapted to pass over the extension 29 of the outlet oil-set; It hasacentral opening 42' which in assembling the parts should be in alinement with the outlet opening 1n the tension 89. The lower end of said member 4;(9 has an enlarged portion 43 in the outer end o f which is screw threaded a needle valve 44. Into the other end oi? said our largement is threaded a nipple 45 having .a tapered opei'iii rg 46, which forms a seat for the point $7 of the needle valve. In assembl ihgthe parts thehead of said nipp'lep'asses into the opening 38 of thecross member 3;? of the mixing tube and the shoulders of said enlarged portionrest upon said cross mem ber. The body rests in the notch 39' and thetlrimble 41 is passed over the plug 29 When the-nut 33 is turned home all the said movableparts are clampedsecurely in their normal position. A sleeve is sli'dingly mounted in themixin g tube" 35 and a slot 46 which, to makeconnection' with the said sleeve, is extended the screw threa -sled por tion'47" of the connectingmember 4-8;. The latter" is secured at right angles by means" of the nuts 49 and 50' to the' end" of a screw 'vi-de a chimney, shown in Fig.

reof through threaded member 51, which is threaded into the downwardly extended projection 52 of the mixing tube.

A cup shaped stationary valve seat 53 with the tapering walls 54 is secured in the inlet opening of the main union 23 by means of the radial arms 55 which rest on the annular shoulders therein and are held in place by the inner end of the mixing tube The said valve seat is preferably made of sheet metal and may be stamped therefrom so that the body is hollow and the concave side should be turned in the direction of the gas flow; that is, toward the burner. lt tlrus becomes an eflicient stop to prevent the flame from being carried back to the needlevalve. It will be seen that by turning the screw 51 the sleeve 45 may be moved inwardly or outwardly, while the inward end thereof forms with reference to the valve 53- anani i-la-r opening which will be reduced or enlarged as the position of the sleeve is changed As the flow of gas is regulated by the needle valve, the movement of the sleeve 45 whichchanges the size of the opening between it the valve 53 will regulate the amount of air admitted to the burner and also the property of the mixture. 'The convenient, relations of the needle valve a nd 'of the mixing tube valve make it COHVGll-lGlTt as well as possible to make a mixture that will give perfect combustion.

In order that the main valve ma be protected against the intense heat coming directly from the burner or burners, I pro 7 6', having the vertical walls 56 andthe' cover 5"? therefor. The cover is secured to the main walls bythe connections 58 so as to leave a free annular opening 5-9. The lower part of the chimney stands upon the transverse supports 60, the nipple 22 passes through a central opening in the top and the link 21 screwed down onto the top holds-the chimney firmly in place upon the support 60. Side openings 25 and 26 are provided through which the outlet and inlet openings of the main union may be passed. A burner or burners (31 is extended downwardly from the main union 23; such burner or burners may be provided with a globe or shade 62,

then passes through the outlet 25- and the connecting member 40 to" the needle valve 45 where the absolute amount isregulated, thence through the mlxlng tube and the mixing tube-valveto the burner. It is then l-i-ghtedby the pilot light of the connection '20, by which the burners are kept at all times moderately heated. It is of great importance in giving long life to the mantles of this class of burners that flash-backs should be avoided, and that when once lighted the final heat shall be quickly established and held steadily at that point. It also adds greatly to the efficiency of the gas consumed to deliver the mixture to the burner in a highly heated condition. As the central union, with the mixing tube valve, of thin metal as described, and a part of the mixing tube itselfare inclosed in the chimney 56, the heated upward currents in the chimney quickly raise the said parts to and keep them at a high temperature. The result is increased efliciency of gas and added life of the mantles.

I claim:

1. In a gas lamp; the combination with a source of gas supply and a burner, of a union having an outlet offset, an extension member secured to said ofiiset, an inlet offset, having a recessed seat, a mixing tube seated in the inlet offset and having a flaring outer end with a peripherial notch, a connecting member having a thimble at its upper end to fit over the extension member, means at its lower end to engage the mixing tube and adapted to engage with the said peripheral notch, a needle valve in said connecting member to regulate the flow of gas to the mixing tube, and means to secure the connecting member to the extension member whereby the mixing tube is held in its seat.

2. In a gas lamp; the combination with a mixing tube adapted to receive air at its outer portion, of means for introducing and copies of thil patent may be obtained for regulating a flow of gas thereto, a valve member in fixed relation to the inner end of said tube and a valve member in the tube movable therein relatively to the fixed member for regulating the flow of mixed gas and air to the burner.

3. In a gas lamp; the combination oit'a mixing tube adaptedto receive air at its outer portion, of means for introducing and regulating the flow of gas thereinto, a fixed tapering valve member at the other end of said tube, a sleeve slidable in the mixing tube, and means for adjusting said sleeve relatively to the said valve member.

4:- In a gas lamp; the combination of a mixing tube adapted to receive air at its outer portion, of means for introducing and regulating the flow of gas thereinto, a hollow tapering valve member at the other end of said tube, a sleeve slidable in the tube, and means for adjusting said sleeve relatively to the said valve member.

5. In a gas lamp; the combination with a union provided with an inlet ofi'set having an inside annular shoulder, of a valve member having radial arms seated on said shoulder, a mixing tube with its inner end resting on said radial arms, and a sleeve longitudinally movable in the mixing tube and adjustable relatively to said valve member.

In Witness whereof, I have hereunto subscribed my name, this 25th day of May,

1914;, in the presence of two subscribing witnesses.

ABRAHAM LAZARSON. Witnesses:

C. K. CHAMBERLAIN, A. S. PHILLIPS.

five cents each, by addressing the "Commissioner of Patents, Washington, D. G. 

